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jeremybenn |
/* MetalSliderUI.java
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Copyright (C) 2005, 2006, Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing.plaf.metal;
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.Graphics;
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import java.awt.Rectangle;
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import java.beans.PropertyChangeEvent;
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import java.beans.PropertyChangeListener;
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import javax.swing.Icon;
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import javax.swing.JComponent;
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import javax.swing.JSlider;
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import javax.swing.UIManager;
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import javax.swing.plaf.ComponentUI;
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import javax.swing.plaf.basic.BasicGraphicsUtils;
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import javax.swing.plaf.basic.BasicSliderUI;
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/**
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* A UI delegate for the {@link JSlider} component.
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*/
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public class MetalSliderUI extends BasicSliderUI
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{
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/**
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* A property change handler that updates the rendered component in response
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* to specific property change events. This custom handler is used to
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* intercept the "JSlider.isFilled" property, which is only recognised by
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* the {@link MetalLookAndFeel}.
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*/
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protected class MetalPropertyListener
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extends BasicSliderUI.PropertyChangeHandler
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{
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/**
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* Creates a new listener.
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*/
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protected MetalPropertyListener()
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{
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// Nothing to do here.
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}
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/**
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* Handles property change events. Events with the name "JSlider.isFilled"
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* are handled here, and other events are passed to the superclass.
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*
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* @param e the property change event.
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*/
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public void propertyChange(PropertyChangeEvent e)
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{
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if (e.getPropertyName().equals(SLIDER_FILL))
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{
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Boolean b = (Boolean) e.getNewValue();
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if (b == null)
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filledSlider = false;
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else
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filledSlider = b.booleanValue();
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}
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else
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super.propertyChange(e);
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}
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}
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/** The thumb color (unused, because an icon is used to draw the thumb). */
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protected static Color thumbColor;
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/**
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* The highlight color used for drawing the track rect when the slider is
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* enabled.
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*/
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protected static Color highlightColor;
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/**
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* The shadow color used for drawing the track rect when the slider is
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* enabled.
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*/
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protected static Color darkShadowColor;
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/** The track width. */
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protected static int trackWidth = UIManager.getInt("Slider.trackWidth");
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/** The length of the major tick marks. */
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protected static int tickLength = UIManager.getInt("Slider.majorTickLength");
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/** The icon used for the thumb control of horizontally oriented sliders. */
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protected static Icon horizThumbIcon = UIManager.getIcon(
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"Slider.horizontalThumbIcon");
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/** The icon used for the thumb control of vertically oriented sliders. */
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protected static Icon vertThumbIcon = UIManager.getIcon(
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"Slider.verticalThumbIcon");
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/** The gap between the track and the tick marks. */
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protected final int TICK_BUFFER = 4;
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/** A key to look up the filledSlider setting in the {@link UIManager}. */
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protected final String SLIDER_FILL = "JSlider.isFilled";
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/**
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* A flag that controls whether or not the track is filled up to the value
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* of the slider.
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*/
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protected boolean filledSlider;
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/**
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* Constructs a new instance.
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*/
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public MetalSliderUI()
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{
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super(null);
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filledSlider = UIManager.getBoolean(SLIDER_FILL);
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darkShadowColor = MetalLookAndFeel.getControlDarkShadow();
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highlightColor = MetalLookAndFeel.getControlHighlight();
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}
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/**
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* Returns a new instance of <code>MetalSliderUI</code>.
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*
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* @param component the component (ignored).
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*
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* @return A new instance of <code>MetalSliderUI</code>.
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*/
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public static ComponentUI createUI(JComponent component)
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{
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return new MetalSliderUI();
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}
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/**
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* Installs the default for this UI delegate in the supplied component.
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*
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* @param c the component.
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*/
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public void installUI(JComponent c)
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{
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super.installUI(c);
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Boolean b = (Boolean) c.getClientProperty(SLIDER_FILL);
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if (b != null)
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filledSlider = b.booleanValue();
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}
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/**
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* Creates a property change listener for the slider.
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*
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* @param slider the slider.
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*
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* @return A new instance of {@link MetalPropertyListener}.
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*/
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protected PropertyChangeListener createPropertyChangeListener(JSlider slider)
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{
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return new MetalPropertyListener();
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}
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/**
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* Paints the thumb icon for the slider.
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*
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* @param g the graphics device.
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*/
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public void paintThumb(Graphics g)
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{
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Color save = g.getColor();
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g.setColor(thumbColor);
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if (slider.getOrientation() == JSlider.HORIZONTAL)
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horizThumbIcon.paintIcon(slider, g, thumbRect.x, thumbRect.y);
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else
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vertThumbIcon.paintIcon(slider, g, thumbRect.x, thumbRect.y);
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g.setColor(save);
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}
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/**
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* Paints the track along which the thumb control moves.
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*
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* @param g the graphics device.
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*/
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public void paintTrack(Graphics g)
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{
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Color shadowColor = MetalLookAndFeel.getControlShadow();
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if (slider.getOrientation() == JSlider.HORIZONTAL)
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{
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int trackX = trackRect.x;
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int trackY = trackRect.y + (trackRect.height - getTrackWidth()) / 2;
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int trackW = trackRect.width;
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int trackH = getTrackWidth();
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// draw border
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if (slider.isEnabled())
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BasicGraphicsUtils.drawEtchedRect(g, trackX, trackY, trackW, trackH,
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darkShadowColor, shadowColor, darkShadowColor, highlightColor);
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else
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{
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g.setColor(MetalLookAndFeel.getControlShadow());
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g.drawRect(trackX, trackY, trackW - 2, trackH - 2);
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}
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// fill track (if required)
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if (MetalLookAndFeel.getCurrentTheme() instanceof OceanTheme)
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{
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if (slider.isEnabled())
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{
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int xPos = xPositionForValue(slider.getValue());
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int x = slider.getInverted() ? xPos : trackRect.x;
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int w = slider.getInverted() ? trackX + trackW - xPos
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: xPos - trackRect.x;
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g.setColor(MetalLookAndFeel.getWhite());
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g.drawLine(x + 1, trackY + 1, x + w - 3, trackY + 1);
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g.setColor(UIManager.getColor("Slider.altTrackColor"));
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g.drawLine(x + 1, trackY + 2, x + w - 3, trackY + 2);
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g.setColor(MetalLookAndFeel.getControlShadow());
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g.drawLine(x + 1, trackY + 3, x + w - 3, trackY + 3);
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g.setColor(MetalLookAndFeel.getPrimaryControlShadow());
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g.drawLine(x + 1, trackY + 4, x + w - 3, trackY + 4);
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}
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}
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else if (filledSlider)
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{
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int xPos = xPositionForValue(slider.getValue());
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int x = slider.getInverted() ? xPos : trackRect.x;
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int w = slider.getInverted() ? trackX + trackW - xPos
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: xPos - trackRect.x;
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g.setColor(MetalLookAndFeel.getControlShadow());
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g.fillRect(x + 1, trackY + 1, w - 3, getTrackWidth() - 3);
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if (slider.isEnabled())
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{
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g.setColor(MetalLookAndFeel.getControl());
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g.drawLine(x + 1, trackY + 1, x + w - 3, trackY + 1);
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g.drawLine(x + 1, trackY + 1, x + 1,
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trackY + getTrackWidth() - 3);
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}
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}
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}
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else
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{
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int trackX = trackRect.x + (trackRect.width - getTrackWidth()) / 2;
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int trackY = trackRect.y;
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int trackW = getTrackWidth();
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int trackH = trackRect.height;
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if (slider.isEnabled())
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BasicGraphicsUtils.drawEtchedRect(g, trackX, trackY, trackW, trackH,
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darkShadowColor, shadowColor, darkShadowColor, highlightColor);
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else
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{
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g.setColor(MetalLookAndFeel.getControlShadow());
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g.drawRect(trackX, trackY, trackW - 2, trackH - 2);
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}
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// Fill track if necessary.
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if (MetalLookAndFeel.getCurrentTheme() instanceof OceanTheme)
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{
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if (slider.isEnabled())
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{
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int yPos = yPositionForValue(slider.getValue());
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int y = slider.getInverted() ? trackY : yPos;
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int h = slider.getInverted() ? yPos - trackY
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: trackY + trackH - yPos;
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g.setColor(MetalLookAndFeel.getWhite());
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g.drawLine(trackX + 1, y + 1, trackX + 1, y + h - 3);
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g.setColor(UIManager.getColor("Slider.altTrackColor"));
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g.drawLine(trackX + 2, y + 1, trackX + 2, y + h - 3);
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g.setColor(MetalLookAndFeel.getControlShadow());
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g.drawLine(trackX + 3, y + 1, trackX + 3, y + h - 3);
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g.setColor(MetalLookAndFeel.getPrimaryControlShadow());
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g.drawLine(trackX + 4, y + 1, trackX + 4, y + h - 3);
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}
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}
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else if (filledSlider)
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{
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int yPos = yPositionForValue(slider.getValue());
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int y = slider.getInverted() ? trackY : yPos;
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int h = slider.getInverted() ? yPos - trackY
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: trackY + trackH - yPos;
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g.setColor(MetalLookAndFeel.getControlShadow());
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g.fillRect(trackX + 1, y + 1, getTrackWidth() - 3, h - 3);
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if (slider.isEnabled())
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{
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g.setColor(MetalLookAndFeel.getControl());
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g.drawLine(trackX + 1, y + 1, trackX + trackW - 3, y + 1);
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g.drawLine(trackX + 1, y + 1, trackX + 1, y + h - 3);
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}
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}
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}
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}
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/**
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* Draws the focus rectangle for the slider. The Metal look and feel
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* indicates that the {@link JSlider} has the focus by changing the color of
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* the thumb control - this is handled elsewhere and so this method is empty
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* (it overrides the method in the {@link BasicSliderUI} class to prevent
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* a default focus highlight from being drawn).
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*
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* @param g the graphics device.
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*/
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public void paintFocus(Graphics g)
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{
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thumbColor = getFocusColor();
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paintThumb(g);
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}
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/**
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* Returns the size of the thumb icon.
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*
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* @return The size of the thumb icon.
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*/
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protected Dimension getThumbSize()
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{
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if (slider.getOrientation() == JSlider.HORIZONTAL)
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return new Dimension(horizThumbIcon.getIconWidth(),
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horizThumbIcon.getIconHeight());
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else
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return new Dimension(vertThumbIcon.getIconWidth(),
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vertThumbIcon.getIconHeight());
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}
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/**
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* Returns the length of the major tick marks.
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*
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* @return The length of the major tick marks.
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*/
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353 |
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public int getTickLength()
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354 |
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{
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int len = tickLength + TICK_BUFFER + 1;
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if (slider.getOrientation() == JSlider.VERTICAL)
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357 |
|
|
len += 2;
|
358 |
|
|
return len;
|
359 |
|
|
}
|
360 |
|
|
|
361 |
|
|
/**
|
362 |
|
|
* Returns the track width.
|
363 |
|
|
*
|
364 |
|
|
* @return The track width.
|
365 |
|
|
*/
|
366 |
|
|
protected int getTrackWidth()
|
367 |
|
|
{
|
368 |
|
|
return trackWidth;
|
369 |
|
|
}
|
370 |
|
|
|
371 |
|
|
/**
|
372 |
|
|
* Returns the track length.
|
373 |
|
|
*
|
374 |
|
|
* @return The track length.
|
375 |
|
|
*/
|
376 |
|
|
protected int getTrackLength()
|
377 |
|
|
{
|
378 |
|
|
return slider.getOrientation() == JSlider.HORIZONTAL
|
379 |
|
|
? tickRect.width : tickRect.height;
|
380 |
|
|
}
|
381 |
|
|
|
382 |
|
|
/**
|
383 |
|
|
* Returns the thumb overhang.
|
384 |
|
|
*
|
385 |
|
|
* @return The thumb overhang.
|
386 |
|
|
*/
|
387 |
|
|
protected int getThumbOverhang()
|
388 |
|
|
{
|
389 |
|
|
// FIXME: for what might this method be used?
|
390 |
|
|
return 0;
|
391 |
|
|
}
|
392 |
|
|
|
393 |
|
|
protected void scrollDueToClickInTrack(int dir)
|
394 |
|
|
{
|
395 |
|
|
// FIXME: for what might this method be overridden?
|
396 |
|
|
super.scrollDueToClickInTrack(dir);
|
397 |
|
|
}
|
398 |
|
|
|
399 |
|
|
/**
|
400 |
|
|
* Paints the minor ticks for a slider with a horizontal orientation.
|
401 |
|
|
*
|
402 |
|
|
* @param g the graphics device.
|
403 |
|
|
* @param tickBounds the tick bounds.
|
404 |
|
|
* @param x the x value for the tick.
|
405 |
|
|
*/
|
406 |
|
|
protected void paintMinorTickForHorizSlider(Graphics g, Rectangle tickBounds,
|
407 |
|
|
int x)
|
408 |
|
|
{
|
409 |
|
|
// Note the incoming 'g' has a translation in place to get us to the
|
410 |
|
|
// start of the tick rect already...
|
411 |
|
|
if (slider.isEnabled())
|
412 |
|
|
g.setColor(slider.getForeground());
|
413 |
|
|
else
|
414 |
|
|
g.setColor(MetalLookAndFeel.getControlShadow());
|
415 |
|
|
g.drawLine(x, TICK_BUFFER, x, TICK_BUFFER + tickLength / 2);
|
416 |
|
|
}
|
417 |
|
|
|
418 |
|
|
/**
|
419 |
|
|
* Paints the major ticks for a slider with a horizontal orientation.
|
420 |
|
|
*
|
421 |
|
|
* @param g the graphics device.
|
422 |
|
|
* @param tickBounds the tick bounds.
|
423 |
|
|
* @param x the x value for the tick.
|
424 |
|
|
*/
|
425 |
|
|
protected void paintMajorTickForHorizSlider(Graphics g, Rectangle tickBounds,
|
426 |
|
|
int x)
|
427 |
|
|
{
|
428 |
|
|
// Note the incoming 'g' has a translation in place to get us to the
|
429 |
|
|
// start of the tick rect already...
|
430 |
|
|
if (slider.isEnabled())
|
431 |
|
|
g.setColor(slider.getForeground());
|
432 |
|
|
else
|
433 |
|
|
g.setColor(MetalLookAndFeel.getControlShadow());
|
434 |
|
|
g.drawLine(x, TICK_BUFFER, x, TICK_BUFFER + tickLength - 1);
|
435 |
|
|
}
|
436 |
|
|
|
437 |
|
|
/**
|
438 |
|
|
* Paints the minor ticks for a slider with a vertical orientation.
|
439 |
|
|
*
|
440 |
|
|
* @param g the graphics device.
|
441 |
|
|
* @param tickBounds the tick bounds.
|
442 |
|
|
* @param y the y value for the tick.
|
443 |
|
|
*/
|
444 |
|
|
protected void paintMinorTickForVertSlider(Graphics g, Rectangle tickBounds,
|
445 |
|
|
int y)
|
446 |
|
|
{
|
447 |
|
|
// Note the incoming 'g' has a translation in place to get us to the
|
448 |
|
|
// start of the tick rect already...
|
449 |
|
|
if (slider.isEnabled())
|
450 |
|
|
g.setColor(slider.getForeground());
|
451 |
|
|
else
|
452 |
|
|
g.setColor(MetalLookAndFeel.getControlShadow());
|
453 |
|
|
g.drawLine(TICK_BUFFER, y, TICK_BUFFER + tickLength / 2, y);
|
454 |
|
|
}
|
455 |
|
|
|
456 |
|
|
/**
|
457 |
|
|
* Paints the major ticks for a slider with a vertical orientation.
|
458 |
|
|
*
|
459 |
|
|
* @param g the graphics device.
|
460 |
|
|
* @param tickBounds the tick bounds.
|
461 |
|
|
* @param y the y value for the tick.
|
462 |
|
|
*/
|
463 |
|
|
protected void paintMajorTickForVertSlider(Graphics g, Rectangle tickBounds,
|
464 |
|
|
int y)
|
465 |
|
|
{
|
466 |
|
|
// Note the incoming 'g' has a translation in place to get us to the
|
467 |
|
|
// start of the tick rect already...
|
468 |
|
|
if (slider.isEnabled())
|
469 |
|
|
g.setColor(slider.getForeground());
|
470 |
|
|
else
|
471 |
|
|
g.setColor(MetalLookAndFeel.getControlShadow());
|
472 |
|
|
g.drawLine(TICK_BUFFER, y, TICK_BUFFER + tickLength, y);
|
473 |
|
|
}
|
474 |
|
|
|
475 |
|
|
}
|